Aichi Tokei Denki KK (Aichi Clock and Electric) began making aircraft at Funakata, Nagoya, in 1920. Major types (post-1935) included B7A torpedo/dive-bomber, D1A biplane bomber, D3A dive-bomber, E11A flying-boat, E13A and E16A reconnaissance seaplanes, H9A flying-boat, M6A submarine-based attack bomber and S1A twin-engined night fighter.